Door check and closer.



Patented June 27, 1911.

Rs cm, WASHINGTON. u. c.

UIT ST inrcn.

ROMAN EDWARD ADAM, OF CORONA, NEW YORK.

DOOR CHECK AND CLOSER.

Specification of Letters Patent.

Patented June 27, 1911.

To all whom it may concern. I

Be it known that I, ROMAN EDWARD ADAM, a citizen of the United States ofAmerica, residing at Corona, in the county of Queens and State of NewYork, have invented certain new and useful Improvements in Door Checksand Closers, of which the following is a specification.

The present invention pertains to door closers of the kind described inmy U. S. Letters Patent 967,289.

In the accompanying drawing on which similar reference letters denotecorresponding parts,

Figure 1 is a front elevation of my device, partly in section; Fig. 2 isa perspective view of a detail; Fig. 3 is a front elevation of amodified construction, and Fig. 4 is a plan view thereof.

In the drawing, which forms a part of this specification, the doorcloser comprises a bracket a adapted to be stationarily secured to thedoor frame P and in which a vertical bolt Z) is rigidly secured.Rotatively mounted on said bolt is a casing 0 rotatably mounted on saidbolt and constructed to inclose a spiral spring (Z, sur rounding thebolt 6, one end of which is secured to the bolt and the other to thesaid casing. An arm 6 fast on the casing and extending transversely tothe door D and at a right angle to the vertical axis of the casingcarries at its free end a roller f, adapted to bear on the door. Thusfar the construction is substantially old.

Since in order to obtain an effective closing device, the spring a? mustnecessarily be strong, the expansion of the spring after the release ofthe door causes a too vigorous closing of the door, resulting in theslamming of the same. To obviate this drawback is the object of mypresent invention. I accomplish this object by providing cam members 9and h on the opposite surfaces of the stationary member a and the rotarymember or casing 0 (Figs. 1 and 2), which are arranged in the path ofone another and which, when the member a, at the opening of the door, isturned. will be caused to pass over one another. When by the expansionof the spring, the door will swing back into closing position, the cammembers 9' of the member 0 will encounter the members it of thestationary part 6;, whereby the swinging of the door for a moment willbe retarded, until the members have passed over one another. The passageof the cam members 9,171, over one another is rendered possible by thecasing 0 being yielding in vertical direction, since it is only looselymounted on the bolt. I prefer, however, to employ the construction shownin Figs. 3 and 4. There,

instead of the cam members, a guiding member 71 is attached to the doorextending transversely thereto and in the path of the arm 6. Thisguiding member consists of a plate having a forwardly projecting portion9' in which a groove 72 is provided containing a curved portion isformed with a curved notch Z. The arm 6 carries a roller m which isengaged in that groove 70. It will be seen that when the roller duringthe closing of the door moves from left to right, it will first enterthe notch Z (see dotted lines in Fig. 4:) and thence gradually move backinto the groove 70', is. Thereby the swinging movement of the arm 6caused by the expansion of the spring 0Z will be retarded and theslamming of the door prevented.

In connection with the retarding mechanism, I provide a device wherebythe extent of the opening and closing movement of the door may becontrolled. This device in the present example is shown as consisting ofan angular notched arm 0, 0 fulcrumed at p in the plate j and capable ofbeing horizontally swung across the groove 7c, 70.

If it is desired to hold the door in open position, the lever 0, 0 afterthe door was opened, is swung, so that its arm 0 extends across thegroove 711,70 as indicated by dotted lines in Fig. 4. When, during thebackward movement of the arm 6, the roller m reaches the arm 0 andengages with its notch 0 in said arm, the door is prevented from closingany farther. According to the adjustment of the position of the leverarm 0, the extent to which the door may be held open can be readilycontrolled.

If it is desired to lock the door in closed position, the lever 0, 0 isswung to occupy the full line position shown in Fig. 4, in which the arm0 thereof extends across the rear portion of the groove is and in frontof the roller m, engaging it in its notch 0 In that position the lever0, 0 serves as a very effective burglar proof look.

In addition to the roller m, the arm may carry the roller f which maybear against the door or a spring 8 extending transversely thereof.

Since various other modifications may be designed by those skilled inthe artwithout deviating from the principle of my invention, I do notwish to restrict myself to the construction shown and specified.

What I claim and desire to secure by Letters Patent is:

1. A, door closer and check, comprising a bracket to be stationarilyfastened to the door frame to which the door is hinged, an arm extendingat a right angle to said member and rotatively secured to the latter, a

spring acting on said arm, a roller carried by said arm, and a rigidmember having an irregularly shaped guide groove and secured to the doorin the path of the said arm and serving to retard the expansive actionof the spring.

.2. A door closer and check, comprising in combination a bracket to bestationarily fastened to the door frame to which the door is hinged, anarm extending at a right angle .to said member and rotatively secured tothe latter, a spring acting on sald arm, av

roller carried by said arm, and a rigid member havmg an irregularlyshaped gulde groove and secured to the door in the path of said rollerand serving to retard the expansive action of the spring.

3. .In a door closer, the combination, of a stationary member, a springactuated arm. rotatively connected to the latter and extendingtransversely to the door, a grooved guide member for said arm and alever pivotally secured to the latter member and capable of being swungacross the groove of the sameto lock 'thedoor.

4:. In a door closer,-'the combination, of a stationary member, a springactuated arm rotatively connected -to :the latter and ex tendingtransversely to the door, a grooved guide member for said arm'and anangular notched lever fulcrumed to saidguide member and capable ofbeingswung across the groove of thelatterto serve as a stop orlock for thedoor.

In testimony whereof I affix my signature in presence of two Witnesses.

ROMAN EDWVARD ADAM. 'Witnesses:

JOHN T. CARMoDY, MAX D. ORDMANN.

Copies of .this patent maybe obtained for five cents each, by addressingthe".Commissioner of Patents.

Washington, D. ,0.

